v6.3.1

• convert: fix checksum of a block relocated from 0-1M range
• qgroup show: fix formatting of limit values in json output
• receive: report paret subovl UUID on errors
• btrfsune: new option --convert-to-free-space-tree to convert from
  block-group-tree back to extent tree for block group tracking
• mkfs: make option --rootdir more verbose and report start when filling
  from the given directory starts
• experimental:
  • btrfstune: checksum switch logic reimplemented, conversion of all
    metadata and data now works, resume from various states also supported
• other:
  • more CI github actions test coverage
  • more kernel/userspace source code sync
  • warning fixes
  • code cleanups
  • documentation updates

v6.3

• mkfs: option -R deprecated, options unified in -O (-R still works)
• mkfs: fix potential race with udev leading to EBUSY due to repeatedly opened file descriptors
• block-group-tree is out of experimental mode
  • available as 'mkfs.btrfs -O block-group-tree'
  • btrfstune can do in-place conversion to/from (use with care)
• balance: fix recognizing old and new syntax
• subvol snapshot: specific error if a failure is caused by an active swapfile
• tree-stats: rephrase warning when run on a mounted filesystem
• completion: 'filesystem du' also completes files
• check: fix docs, help text and warning that --force + --repair works on a mounted filesystem
• build: fix static build when static libudev is available
• documentation:
  • more updates from wiki, developer docs, changelogs
  • reformatting
  • updates and fixes
• other:
  • test updates and fixes
  • CI cleanups and old files removed
  • integration with Github actions

v6.2.2

• fix build on old x86 architectures with builtin crypto
• device stats: fix printing wrong values in tabular output
• qgroup show: fix qgroup id formatting in json output
• restore: fix restoring xattrs on directories
• restore: don't modify metadata in dry-run mode
• balance: fix some cases wrongly parsed as old syntax
• balance: warn when deprecated syntax is used
• seeding: fall back to old way if sysfs device fsid is not available
• convert: handle orphan file ext4 feature
• other:
  • sync ioctl definitions
  • enable github CI
  • update documentation